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[Jan Groenewald <jan@xxxxxxxxxx>]

*** This bug is a duplicate of bug 1097396 ***
    https://bugs.launchpad.net/bugs/1097396

** This bug has been marked a duplicate of bug 1097396
   Unplugging USB Headset causes Kernel Panic

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https://bugs.launchpad.net/bugs/1091756

Title:
  12.04 Kernel Panic when removing USB headphones

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I get a very reliable kernel panic when unplugging the USB sound
  adapter of Logitech G330 USB headphones/headset. I have not managed to
  get my hand on the actual trace as it shows up in none of the logs.

  But I did grab a pics of the panic screen.

  when connected to USB3 port:
  http://i.imgur.com/lruYC.jpeg

  when connected to USB2 port:
  http://i.imgur.com/naWv9.jpeg

  
  To reproduce, just unplug the headset and it will panic immediately every time.

  System Info:
  Description:	Ubuntu 12.04.1 LTS
  Release:	12.04

  Ubuntu 3.2.0-35.55-generic 3.2.34
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC3202 Analog [ALC3202 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu15.1
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC3202 Analog [ALC3202 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  madmaze    2663 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf2530000 irq 46'
     Mixer name	: 'Realtek ALC3202'
     Components	: 'HDA:10ec0269,17aa21f3,00100203'
     Controls      : 24
     Simple ctrls  : 13
  Card29.Amixer.info:
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'
     Mixer name	: 'ThinkPad EC (unknown)'
     Components	: ''
     Controls      : 1
     Simple ctrls  : 1
  Card29.Amixer.values:
   Simple mixer control 'Console',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=26784358-9f9d-46fd-b096-ebc5369d54c5
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  MachineType: LENOVO 2350BF9
  MarkForUpload: True
  NonfreeKernelModules: symap_custom_3.2.0_35_generic_x86_64 symev_custom_3.2.0_35_generic_x86_64
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-35-generic root=/dev/mapper/ubuntu-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-35.55-generic 3.2.34
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-35-generic N/A
   linux-backports-modules-3.2.0-35-generic  N/A
   linux-firmware                            1.79.1
  StagingDrivers: mei
  Tags:  precise staging
  Uname: Linux 3.2.0-35-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 05/25/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G1ET41WW (1.16 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2350BF9
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG1ET41WW(1.16):bd05/25/2012:svnLENOVO:pn2350BF9:pvrThinkPadT430:rvnLENOVO:rn2350BF9:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2350BF9
  dmi.product.version: ThinkPad T430
  dmi.sys.vendor: LENOVO

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